Press



Aug. 20, 1929.

w. 0. PIERSON ET AL PRESS Filed Feb. 15, 1928 4 Sheets Sheet 2 INVEIJTORS William -D. Pzerson Fred S. V T allcenbzug BYg 2 g NEY g- 20, 1929- w. D. PlERSON ET AL 1,725,300

mess I Filed Feb. 13, 1928 4 Sheets-Sheet 5 "NVENTORS William. Z7.Pz'erson, Fred S. Van VaZ/renbur g.

' ATTORNEY g- 1929- w. D. PIERSON ET AL ,300

PRESS Filed Feb. 1:5, 1928 4 Sheets-Shet 4 mvgmons Mllzanz D. Pzerson Fred gig an Val/ten b 19 A RNEY Patented Aug. 20, 1929.

UNITED- STATES,

v "1,125,300 PATENT OFFICE.

WILLIAM D. PIERS ON AND FRED S. VAN VALKENBURG, OF WATERBURY, CONNECTI- CUT, ASSIGNORS TO THE WATER-BURY FARREL FOUNDRY AND-MACHINE COM- PANY, F WATERBURY,,QONNECTICU T, A. CORPORATION OF CONNECTICUT PRESS;

Application filed February 13, 1928. Serial No. 254,080.

This invention relates to a new and improved press, referring more particularly to a multiple plunger press for cutting a blank from a strip of metal and performing a se- It is one of the objeetsof this invention toprovide means whereby the tools that operate upon plural rows of presented blanks may 15 be so held in series as to permit of two adjustments, that is, one series in a path at substantially a right angle to the other series and as a unit, and each tool in a ath substantially parallel to its axis, such ad ustments to be ob- 9 tainedwith the minimum labor, skill and expenditure ofltime, and with a certainty that the parallel arrangement of the tools will be maintained. A

Further objects and features of the inven- K tion will be apparent from the accompanylng drawingscin connection with the description hereinafter contained.

To these, and other ends, our inventioncofisists in the press, having certain details of construction and combinations of parts as will be hereinafter described and more particularly pointed out in the claims.

. Referring to the. drawings, in which like numerals of referencedesignate like parts in the several figures;

Figure 1 is an elevation of a press gate and adjacent parts embodying our improved mechanism;

. Figure 2 is a plan view of the tool holder and tools; 7 I

Figure 3 is an en'largedsectional view of the gate and associated mechanisms,'taken generally upon line 3-3 of Figure 1;

Figure 4 is a'iragmentary plan view of a portion of the gate; I

Figure 5 is a plan view of one ofthe stripper plates;. p

Figure 6 is a plan view of the body' membar with some of the'parts associated thereally upon line 6.6 of Figure 1 and Figure 7 is a fragmentary e1evat ion ,of our improved press, the parts in section be with, the parts in section being taken genering ftaken generally uponline 7'-7 of-Figure 1. v

Thismachine is of the type having'a gate carrying a plurality of unches movable toward and awa froma ed, to which are secured a plurality of dies, and through which gate a blanking slide is independently operated.

In the embodiment ofthe invention as herein shown anddisclosed;' 10 designates the body of the press or the like, 11 the guide rods connected therewith and 12 the gate which 1s guided by the ro s and-movable toward and away from the bed by means (not shown) but common in the art.

Movably mounted in this gate is a blank ing slide 49 upon which a punch holder 88 carrying a blanking punch 50 is adjustably secured.

The timingof the movement of the gate. 12 and blanking slide 49 is such that when the former ,is in substantially its extreme down position, the latter is in substantially its extreme up position and vice versa fOI fl. purpose hereafter disclosed.

The gate is provided with lips 13 and a plurality of slots 14, the latter being arranged in series upon opposite sides of the assure a correct alignment with the gate, ir-

respective of the relative position of the punch framesone with the other.

The frames" are adjustably secured to the gateby screws 17, each of which passes through a slot 14. By loosening these screws, the frames may be moved toward and away from each other in guided alignment with each other.

Adjustably secured ineach of these frames 15 are a plurality of punch holders 18, having shanks 19, 20 and 21 thereon, preferably of different diameters. The shank21 of the holder passes through an o ening in the arm within a wide range without departing from the spirit of our invention. v 7 Each punch holder has an axial. ad ustment within the frame and all the punch holders in each series move as a unit in correct alignment with'each other toward and away from the punch holders in the ad] accnt series, through movement of the frames 15' by manipulation of the screws 17.

The die and die holding mechanism, as shown herein, comprise companion die beds 39, each of which is secured to the body 10 by screws 44, or the like, that pass through slots 79 in the body, to permit adjustment of the die beds toward and away from each other. Within each die bed is a die block that is secured by screws or the like, and a plurality of-dies 42 are-heldtherein by nuts Movable in the die bed 39, above the die blocks is the transferslide 41, having a'receiving die. 80 fixed therein by the screws 81 or the like, and hinged therein the fingers 78, which are-arranged in pairs and moved in- E wardly by the springs 82 or the like.

Fixed to the body 10 is the bracket 51, within which is the slide 52. A reciprocatory movement is given this slide'from a cam 53 on a rotating shaft 54'and engaging rolls 55 journaled on the slide opposite each Secured to the slide 52 is a trans-.

other. mission plate 56 having stop lugs 57 thereon. A link 58 for each transfer slide is adjustably secured to the transmission plate by a screw 59 which passes through a slot in the link. Endwise adjustment of the link is obtained through a-screw 60, which has a threaded engagement with a lug 57, a link 58 at one end having a right hand thread and the other a left hand thread. Nuts 61 upon the screws provide meansfor locking the screws.

against movement in its'adjusted positions. At the outer end of each link 58 is a stud 62 that is threaded into a slide block 63 which projects into a longitudinal recess 64- in the transfer slide 41. The reciprocating movep between a pair of yieldin fingers 78. Durmentof the slide 52 is imparted to the transfer slides 41 v through the plate 56 and links 58. The position'of each of the transfer slides 41 relative to the slide 52 may be varied by changing the relative positions ofthe links 58. Movement of the transfer slides 1 toward andaway from each other is acc mmodated through the longitudinal re-- c sses 64, which through the studs 62 and s1 e blocks 63 insure a positive connection between the transfer slides and the slide 52 irrespective of the'relative position of the transfer slide. v i

The metal strip 65, from which the blanks are cut, is fed under theblanking punch 50 at an angle to the direction of movement of the transfer slides 41, substantially as shown in Figure 6. This strip is fed from a spool 66 journaled on a shaft 67 supported in a block 68 adjustably secured by the bolt 69 to a bracket 70. v Endwise movement of this strip is obtained by passingthe same through a pair of feed rolls 71 journaled ina bracket 72 on the body 10, the rolls being geared together by gears 73 and actuated from a rotating shaft '74'through an intermediate flexible connection 75 of any well known type. Bolts 91 that pass through openings 92 in the bracket 72 permit the latter to be secured in various positions. The strip in its movement through the press travels over the die plate 83, containing the cutting dies 84.

A limited vertical adjustment for the punches 50 is obtained through manipulation of the wedges 89 which pass through suitable openings in the punch holder 88..

The. relative positions of the punch holder 88 toward and away from each other is varied by placing suitable filling pieces of varying sthicknesses between the slide holder 88. a?

49 and punch In operation the two blanking slides de- I scend and each blanking punch 50 in conjunction with a cutting die 84 cuts a blank 85 from the strip, which is pushed into a receiving die 80 connected with the transfer slide 41 against the bottom. plate 86 in the die bed.

The stripper plae 76, having openings 77 therein to receive the punches 50, prevents the strip 65 from being pulled upwardly with the punches as they ascend. After the blanking punch is withdrawn the transfer sllde moves to the left, as shown in Figures 1 and 6, carrying the blank 85 to the first drawing punch 28 in the series, which forms the I blank into a shell 46 as it passes down through the die42. Durin this drawing operation the transfer slide s returned to its former position and as the gate ascends carrying the punches 28, the blanking slide 49 descends and the punches 50 out two new blanks.

As each punch 28 is withdrawn from a die 42, the lifter punch 47, operated in a well own manner, moves the shell 46 upwardly ing the next movement 0 the transfer slide toythe left, these fingers carry the shell 46 to a point below the next punch 28 in the series, where it is subjected to another operation and so on until the shell has been subjected to suf ficient operations to form a completed article which is discharged through an opening 87 mtoa receptacle conveniently arranged to receive 1t.

We have provided mechanism for stripping the work from the punches 28 that is adapted to perform its function without adjustment irres ective of the relative position of the punc res toward and away from each other.

This stripper mechanism comprises a plate 37 held by posts 38 in a fixed position rela tively to the body 10 or the like, and through which is threaded a plurality of sleeves 29 locked against movement in their adjusted positions by the nuts 30. Movable in these sleeves 29, by means of the springs 48, are the studs 31, having connected therewith the stripper plates 32, held against rotation thereon by the dowel pins 33, or the like. The other end of each of these stripper plates 32 projects into a recess 35 in a stripper sleeve 36, which encircles the punch 28, a slot 34 being provided for this purpose. The slot 34 is of sufficient deoth to permit the engagement of the plates 32 with the sleeve 36 in its innermost position and equally so in its outermost position, and thus the stripper mechanism in any of the varying positions of the puncheswill operate without adjustment of any of its. parts. a

As shown, the blanks as cut from the strip are several spaces .apart but at each. feed of thestrip new blanks are cut therefrom as close as practicable to the openings left by the blanks last out, thereby avoiding waste.

By keeping the same relative spacing a variation' in the size of the blanks is permissible by changing the angle of travel of the strip 65 as it passes under the blanking punches, Such varying paths of travel being accommodated by the adjustability of the bracket 72 on' the body 10 and the block 68 on the bracket Y 70. This adjustment toproduce blanks of various sizes results in a consequent variation in the size of the shells produced from the blank, which in turn is provided for by adjustment within reasonable limits by the die beds and punches and 28 toward and awa from each other.

hat we claim as new and desire to secure by Letters Patent, is

1. In mechanism of the character de-.

scribed; a movable member; a-plurality of blocks having an intermeshin therewith; a plurality of punc holders con.- nected with each of said blocks; means'for adj ustably securing each of said blocks to said mc1nber;-and means for adjusting) each of the punch holders relatively to the l path at substantially a right angle to.1ts path of adjustment upon the member.

2. In mechanism of the character .described; a plurality of series of punch holdrs; and means for mounting each of said s ries of unch holders upon a member, iereby tiey may be adjustable relatively to he member and maintained in their alignmei t one with the other; a punch within each engagement ock in'a of saidpunch holders; and a stripper for each of said punches which will maintain its operative relation with the punch mechanism without adjustment irrespective of the relative position of the punch holder. In mechanism of the character described; a gate; a-plurality of punch frames associated therewith and movable in substantially parallel lines toward and away from each other; means for adjustably securing each of the frames to the gate; a plurality of punch holders connected with cach of the frames and adjustable relatively thereto, the arrangement of said framesiand gate being such that all of the punches associated with one of the frames are adjusted therewith as a unit relative to the punches in the other frame. 1

g 4. In mechanism of the character describedya gate; a plurality of substantially U-shaped punch frames associated therewith and/ movable in substantially parallel lines toward and away from each other; means for adj ustably securing each of the frames to thegate; a p rality of punch'holders connected with each of the frames and adjustable relat-ively thereto, the arrangement of said irames and gate being such that all of the punches associated with one of the frames are adjusted therewith as a unit relative to the punches in the other frame, a portion of the means for adjustably connecting the punch holders to the frame being within the open space between the substantially parallel walls of the frame.

5. In mechanism of' the character de scribed; a recessed gate; a plurality of punch frames associated therewith and movable in substantially parallel lines toward and away from each other; means for adj ustably securing each of the frames to the gate; a plurality of punch holders connected with each of the frames and adjustable relatively thereto, a

portion of the adjusting and securing means being within a recess in the gate, the arrangement of said frames and gate being such that all of the punches associated with one of the frames are adjusted therewith as a unit relative to the punches in the other frame.

6. In mechanism of the character described; a gate; a plurality of substantial] U-shaped unch frames associated therewit l and movalile insubstantially parallel lines toward and away from each other; means for adjustably securing each of the frames to the ate; punch holders, each of which has a gha'nk portion that projects through an opening in one of the substantially parallel arms of the frames; threaded securing means on the unch holder, a portion of the securing means eing upon one side of one of said parallel arms and another portion upon the op osite side, the arr. ngement of said frames and gate being such that all of the punches associated with one of the. frames are adjusted there-,

with as a unit relative to the punches inthe other frame.

7 In mechanism of the character described; a gate; a plurality of punch frames associated therewith and movable in substantially parallel lines toward and away from each I gate being such that all of the punches associated with one of the frames are adjusted therewith as a unit relative to the punches in the other frame.

7 8. In mechanism of the character described; .a gate; a plurality of substantially U-shaped punch frames "associated therewith and movable in substantially parallel lines to- .--ward and away from each other; means for adjustably securing each of" the frames to the gate; punch holders, each of which has a shank portion that projects through an opening in one otthe substantially parallel arms of the frame and angular in cross section within the other of said parallel arms; threaded securing means on the punch holder, a portion of the securingmeans being upon one side of one ofsaid parallel armsand another portion upon the opposite side, the arrange- ,ment of said frames and gate being such thatv all of the punches associated with one of the frames are adjusted therewith as a unit relative to the punches in the other frame.

9. In mechanism of the character described a plurality of'series of punch holders and means for mounting each of said series of punch holders upon a member, whereby they may be adjustable relatively to the member and maintained in their alignment one with the other; apunch within each of said punch holders; a fixed part; a sleeve in the fixed part for each of the punch holders; a plunger within each of the sleeves; a stripper plate associated with each of the plungers and having an operative connection with an adjacent punc 10. In mechanism of the character de- 5 within each of said punch holders; a fixed part; a "sleeve in the fixed part for each of the punch holders; .a plunger within each of the sleeves; a stripper plate associated with each of the plungers and having an operative-connection with" an adjacent punch;and yie]ding means for moving the plunger in one direction. j

11. In mechanism of the character described; a plurality of series of punch holders; and means for mounting each of said series of punch holders upon a member, whereby "they may be adjusted relatively to the member and maintained in their alignment one with the other; a punch within each of said' punch holders; a fixed part; a sleeve in the fixed part for each of the punch holders; a

plunger within each of the sleeves; a sleeve associated with each punch; a stripper plateassociated with each of the plungers and having an operative connection with an adjacent sleeve.

12. In mechanism of the character (hascri,bed; a movable member; a'punch holder associated therewith, whereby the same may be adjusted relatively thereto; a punch holder; a punch connected with the punch holder; a stripper thereon; and independent means for in-part controlling the action of the stripper, comprising a plunger movably mounted in the fixed part; and a connection between the stripper and plunger, the latter having a movable engagement with the-stripper to accommodate various relative positions of the punch. L a

In testimony whereof weihave hereunto aifixed our signatures.

WILLIAM D. PIERSON. FRED S.- VAN VALKENBURG. 

